It presents a case of a healthy woman of 28 years with a tumor in his leg attached to soft tissue, she doesn't have epidemiological history of travel outside Lima, without pulmonary, hepatic or systemic disease and with negative serology for Equinococcus granulosus before, during and after the surgical excision. In a first opportunity, they removed tumor and they didn't suspect of hydatidosis so they didn't give a proper treatment, so 16 weeks after, she came back with a relapse, where with a specific diagnosis was performed the surgery and treatment with albendazole, followed up after six months, the patient didn't have recurrence.